This article is over 5 years old and may contain outdated information.


Too close to call

Give these species another few decades and they could be comeback stories. That’s not to say they won’t quickly go the other way if human vigilance and crucial research lapses or natural events interfere.
  • Nov 30, 2013
  • 328 words
  • 2 minutes
The black-footed ferret could soon be considered a comeback story Expand Image


Imagine conservationists’ delight when a small population of black-footed ferrets, which were extirpated from Canada’s Prairies by the 1930s and assumed extinct everywhere in the 1970s, was rediscovered on a Wyoming ranch in 1981. Within a few years, captive breeding programs were redistributing these bandit-masked members of the weasel family, with 35 released into Saskatchewan’s Grasslands National Park in 2009. Their survival depends on robust colonies of their main food, black-tailed prairie dogs. Today there are a dozen or more adult black-footed ferrets living and breeding in Canada, so the population is still far from stable.


Another troubled member of the weasel family, this subspecies of American marten is found only in Newfoundland, where it once lived in tree branches throughout the province’s forests. After centuries of being trapped for its pelt, however, the government stepped in to make commercial harvesting of the species illegal. That was in 1934, but the animal’s numbers continued to decline, probably because of habitat fragmentation from logging. After hitting a low of fewer than 300 in 1995, between 400 and 850 are now thought to be breeding in five isolated subpopulations in Newfoundland.


This rarest of North America’s songbirds has been confirmed breeding in Canada only a few times: near Barrie, Ont., in 1945, and at Canadian Forces Base Petawawa in 2007 and 2008. The majority of its range lies in Michigan, though it may once have been a regular in Ontario. Kirtland’s warbler is fussy — after wintering in the Bahamas, it returns each May to nest, but strictly in large stands of young Jack pine. Human suppression of natural forest fires prevented the renewal of these forests, and the species hit an all-time low of about 170 males in the 1970s. Habitat management in Michigan has since helped them rebound to between 1,500 and 2,000 breeding pairs, so Canadians could soon be seeing more of the warbler.


Are you passionate about Canadian geography?

You can support Canadian Geographic in 3 ways:

Related Content

illegal wildlife trade, elephant foot, ivory, biodiversity


The illegal wildlife trade is a biodiversity apocalypse

An estimated annual $175-billion business, the illegal trade in wildlife is the world’s fourth-largest criminal enterprise. It stands to radically alter the animal kingdom.

  • 3405 words
  • 14 minutes
A grizzly bear lies dead on the side of the road


Animal crossing: Reconnecting North America’s most important wildlife corridor

This past summer an ambitious wildlife under/overpass system broke ground in B.C. on a deadly stretch of highway just west of the Alberta border. Here’s how it happened.

  • 3625 words
  • 15 minutes


Do not disturb: Practicing ethical wildlife photography

Wildlife photographers on the thrill of the chase  — and the importance of setting ethical guidelines 

  • 2849 words
  • 12 minutes


Announcing the winners of the 2022 Canadian Wildlife Photography of the Year competition

Canadian Geographic is pleased to honour 14 photographers for their outstanding images of Canadian wildlife

  • 1238 words
  • 5 minutes